MemLog.v: prove [apply_sync_ok]
MemLog.v: prove [apply_sync_ok]

[array_max_length_pimpl] turns out to be very useful!

mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl,mit-pdos/fscq-impl